A British MP and a Sikh member of the House of Lords claimed that top secret documents suggested Prime Minister Margaret Thatcher’s government helped Indira Gandhi plan the storming of the Golden Temple in 1984 to flush out militants from the shrine, an operation that left more than 1,000 people dead.

Tom Watson, the Labour lawmaker from West Bromwich East, and Lord Indarjit Singh said the documents released under Britain’s 30-year rule included “papers from Mrs Thatcher authorising the SAS (Special Air Service) to collude with the Indian government on the planning on the raid of the Golden Temple”.

The government apparently “held back” some more documents and “I don’t think that’s going to wash”, he told BBC Asian Network.

“I think British Sikhs and all those concerned about human rights will want to know exactly the extent of Britain’s collusion with this period and this episode and will expect some answers from the Foreign Secretary,” Watson said.

He wrote on his website that he would write to the Foreign Secretary and raise the issue in the House of Commons to get a “full explanation”.

“But trying to hide what we did, not coming clean, I think would be a very grave error and I very much hope that the Foreign Secretary will…reveal the documents that exist and give us an explanation to the House of Commons and to the country about the role of Britain at that very difficult time for Sikhism and Sikhs,” he added.

On his website, Watson referred to documents that were made public by the organisation “Stop Deportations”. The organisation said these documents were among a series of letters released at the New Year by the National Archives in London.

A letter marked “top secret and personal” dated February 23, 1984, nearly four months before the incident in Amritsar, titled ‘Sikh Community’, reads: “The Indian authorities recently sought British advice over a plan to remove Sikh extremists from the Golden Temple in Amritsar.

“The Foreign Secretary decided to respond favourably to the Indian request and, with the Prime Minister’s agreement, an SAD [sic] officer has visited India and drawn up a plan which has been approved by Gandhi. The Foreign Secretary believes that the Indian Government may put the plan into operation shortly.”

Lord Singh, also the director of the Network of Sikh Organisations in the UK, now wants the UK government to reveal the extent of British government involvement in both Houses of Parliament